CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
CONSOLIDATED STATEMENTS OF EARNINGS
REVENUES	$ 509,370	$ 392,206	$ 238,997
Cost of revenues	409,638	330,139	245,817
GROSS PROFIT (LOSS)	99,732	62,067	(6,820)
Selling, general and administrative expenses	47,321	39,041	44,125
Impairment loss	7,901		4,895
INCOME (LOSS) FROM OPERATIONS	44,510	23,026	(55,840)
Other income, net	2,552	1,859	8,075
INCOME (LOSS) BEFORE INCOME TAXES	47,062	24,885	(47,765)
Income tax (expense) benefit	(11,356)	(1,074)	7,053
NET INCOME (LOSS)	35,706	23,811	(40,712)
Net (loss) income attributable to non-controlling interests	(2,538)	(40)	1,977
NET INCOME (LOSS) ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN, INC.	38,244	23,851	(42,689)
Foreign currency translation adjustments	(1,370)	35	(770)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN, INC.	$ 36,874	$ 23,886	$ (43,459)
NET INCOME (LOSS) PER SHARE ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN, INC.
Basic	$ 2.43	$ 1.52	$ (2.73)
Diluted	$ 2.40	$ 1.51	$ (2.73)
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING
Basic	15,715	15,668	15,621
Diluted	15,913	15,825	15,621
CASH DIVIDENDS PER SHARE	$ 1.00	$ 3.00	$ 1.00